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| 1 /* | |
| 2 * libjingle | |
| 3 * Copyright 2004--2011 Google Inc. | |
| 4 * | |
| 5 * Redistribution and use in source and binary forms, with or without | |
| 6 * modification, are permitted provided that the following conditions are met: | |
| 7 * | |
| 8 * 1. Redistributions of source code must retain the above copyright notice, | |
| 9 * this list of conditions and the following disclaimer. | |
| 10 * 2. Redistributions in binary form must reproduce the above copyright notice, | |
| 11 * this list of conditions and the following disclaimer in the documentation | |
| 12 * and/or other materials provided with the distribution. | |
| 13 * 3. The name of the author may not be used to endorse or promote products | |
| 14 * derived from this software without specific prior written permission. | |
| 15 * | |
| 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED | |
| 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF | |
| 18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO | |
| 19 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; | |
| 22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, | |
| 23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR | |
| 24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF | |
| 25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 26 */ | |
| 27 | |
| 28 #include "talk/app/webrtc/audiotrack.h" | |
| 29 | |
| 30 #include "webrtc/base/checks.h" | |
| 31 | |
| 32 using rtc::scoped_refptr; | |
| 33 | |
| 34 namespace webrtc { | |
| 35 | |
| 36 const char MediaStreamTrackInterface::kAudioKind[] = "audio"; | |
| 37 | |
| 38 // static | |
| 39 scoped_refptr<AudioTrack> AudioTrack::Create( | |
| 40 const std::string& id, | |
| 41 const scoped_refptr<AudioSourceInterface>& source) { | |
| 42 return new rtc::RefCountedObject<AudioTrack>(id, source); | |
| 43 } | |
| 44 | |
| 45 AudioTrack::AudioTrack(const std::string& label, | |
| 46 const scoped_refptr<AudioSourceInterface>& source) | |
| 47 : MediaStreamTrack<AudioTrackInterface>(label), audio_source_(source) { | |
| 48 if (audio_source_) { | |
| 49 audio_source_->RegisterObserver(this); | |
| 50 OnChanged(); | |
| 51 } | |
| 52 } | |
| 53 | |
| 54 AudioTrack::~AudioTrack() { | |
| 55 RTC_DCHECK(thread_checker_.CalledOnValidThread()); | |
| 56 set_state(MediaStreamTrackInterface::kEnded); | |
| 57 if (audio_source_) | |
| 58 audio_source_->UnregisterObserver(this); | |
| 59 } | |
| 60 | |
| 61 std::string AudioTrack::kind() const { | |
| 62 RTC_DCHECK(thread_checker_.CalledOnValidThread()); | |
| 63 return kAudioKind; | |
| 64 } | |
| 65 | |
| 66 AudioSourceInterface* AudioTrack::GetSource() const { | |
| 67 RTC_DCHECK(thread_checker_.CalledOnValidThread()); | |
| 68 return audio_source_.get(); | |
| 69 } | |
| 70 | |
| 71 void AudioTrack::AddSink(AudioTrackSinkInterface* sink) { | |
| 72 RTC_DCHECK(thread_checker_.CalledOnValidThread()); | |
| 73 if (audio_source_) | |
| 74 audio_source_->AddSink(sink); | |
| 75 } | |
| 76 | |
| 77 void AudioTrack::RemoveSink(AudioTrackSinkInterface* sink) { | |
| 78 RTC_DCHECK(thread_checker_.CalledOnValidThread()); | |
| 79 if (audio_source_) | |
| 80 audio_source_->RemoveSink(sink); | |
| 81 } | |
| 82 | |
| 83 void AudioTrack::OnChanged() { | |
| 84 RTC_DCHECK(thread_checker_.CalledOnValidThread()); | |
| 85 if (state() == kFailed) | |
| 86 return; // We can't recover from this state (do we ever set it?). | |
| 87 | |
| 88 TrackState new_state = kInitializing; | |
| 89 | |
| 90 // |audio_source_| must be non-null if we ever get here. | |
| 91 switch (audio_source_->state()) { | |
| 92 case MediaSourceInterface::kLive: | |
| 93 case MediaSourceInterface::kMuted: | |
| 94 new_state = kLive; | |
| 95 break; | |
| 96 case MediaSourceInterface::kEnded: | |
| 97 new_state = kEnded; | |
| 98 break; | |
| 99 case MediaSourceInterface::kInitializing: | |
| 100 default: | |
| 101 // use kInitializing. | |
| 102 break; | |
| 103 } | |
| 104 | |
| 105 set_state(new_state); | |
| 106 } | |
| 107 | |
| 108 } // namespace webrtc | |
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Chromium Code Reviews
Issue 1610243002:
Move talk/app/webrtc to webrtc/api (Closed)
Base URL: https://chromium.googlesource.com/external/webrtc.git@master